baber/WOPTO huggingface dataset:
Patent CA-2028946-C (CA)
Title: Power supply system for a linear motor type transportation system
Inventor: TAKAHASHI YOUJI
IPC: B61B13/08
Filed: 1990-10-30
Granted: 1994-07-26
Abstract: A power supply system for a linear motor type transportation system includes a series of driving coils disposed along a railroad track for producing a moving magnetic field to drive a train. A plurality of feeding blocks is disposed along the track for supplying electric power to the driving coils. A plurality of power converters is each connected to the corresponding feeding blocks to supply electric power to the corresponding feeding section composed of the feeding blocks, and a plurality of block switches connected between neighboring feeding blocks of the feeding blocks. A main controller for each feeding section includes a unit for calculating a feeding section boundary candidate of a power converter between the neighboring power converters on the basis of the position information of a train in the feeding section, a section boundary determining unit, and a feeding block switch control unit for controlling the on-off state of the block switches to define the feeding section boundary between two neighboring feeding blocks. Each boundary determining unit selects one boundary from the boundary candidates. The system enables operation of trains with safety at high density regardless of the condition of the trains and of the power converters.
Patent CA-2029234-C (CA)
Title: Crusher
Inventor: SIDNEY GEORGE L
IPC: F16D1/093
Filed: 1990-11-02
Granted: 1996-10-29
Abstract: A  crusher  having  a  pair  of  spaced  rollers mounted on shafts.  One of the rollers is moveable with respect to the other roller and the movement is by a pair of  screw jacks  in conjunction with a pair of toggle assemblies.  The moveable roller is supported by moveable bearing  housings  at  ends  of  its  shaft.    The  toggle assemblies apply a force to the moveable bearing housings to slide each moveable bearing housing along a bearing support and a track located on each side of the crusher. Each roller comprises a pair of roll hubs mounted on the shaft, an expansion ring and a roll shell.  Roll wedges are located between the expansion ring and the roll hubs and  the  roll  wedges  are drawn  together  by  bolts  to provide a radially outward force on the expansion ring which holds the roll shell in place.
Patent CA-2029972-C (CA)
Inventor: KUHAJEK EUGENE J
IPC: C09K3/18
Filed: 1990-11-14
Granted: 1999-05-25
Abstract: A deicer composition contains a deicing compound plus between about 0.5 and about 5.0 weight percent of a gelling agent, such as hydroxyethyl cellulose, to minimize spalling of concrete to which the deicer composition is applied.
Patent CA-2033563-C (CA)
Inventor: FOSTER THOMAS LEE
IPC: A61B17/06
Filed: 1991-01-03
Granted: 2001-04-10
Abstract: A needle driver instrument suitable for use with a trocar sheath in operative endoscopic surgical procedures such as laparoscopic and pelviscopic procedures is disclosed for driving a curved suture needle. The needle driver instrument comprises an elongated cylindrical tube member having a channel formed about the distal end thereof for receiving either a curved or a straight suture needle. The channel is transversely formed through the elongated member and has a plurality of surfaces to orient and fix the suture needle in a predetermined orientation. A wedge operable across the channel and through the passageway of the elongated member wedges the needle between at least two of the contact surfaces of the channel to fixedly position the suture needle in the desired orientation. At the proximal end of the device is a handle with a generally U-shaped spring extending therefrom for manual operation of the wedge. A rod extending from the wedge through the elongated member of the instrument is connected to the spring for actuation and operation of the wedge. The device is comprised of component parts which are easily disassembled far cleaning and sterilization.
Patent CA-2037007-C (CA)
Title: 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl and transition metal complex containing the same as ligand
Inventor: ISHIZAKI TAKEROU
IPC: C07B61/00
Filed: 1991-02-25
Granted: 2000-05-30
Abstract: A 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl represented by formula (I):   (see formula I) wherein R represents a lower alkyl group, is disclosed. A transition metal complex comprising a transition metal and a 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl represented by formula (I) as a ligand is also disclosed.
Patent CA-2038097-C (CA)
Title: Method and composition for coiontophoresis
Inventor: SAGE BURTON HENRY JR
IPC: A61K45/08
Filed: 1991-03-12
Granted: 1997-01-07
Abstract: Methods for enhancing the delivery of an active ingredient to the vasculature of an animal by iontophoresis have the steps of adding a vasoactivator to a formulation with an active ingredient, coiontophoresing the vasoactivator and the active ingredient into the skin of an animal and establishing a concentration of the vasoactivator in the skin near the upper capillary loops thereof so that the blood flow is changed therethrough. The vasoactivator effectively changes the blood flow in the upper capillary loops of the vasculature in the skin of an animal.    If the vasoactivator is a vasodilator, the blood flow is increased and when the vasoactivator is a vasoconstrictor, the blood flow is decreased. The specification discloses iontophoretic delivery apparatus for use with a formulation for controlling iontophoretic transdermal administration of an active ingredient into the blood stream of the vasculature of an animal, and discloses methods and compositions for enhanced iontophoretic delivery of active agents. The compositions are pharmaceutically acceptable compositions for iontophoretic delivery comprising a delivery enhancing amount of a vasodilator or vasoconstrictor and active agent.
Patent CA-2039006-C (CA)
Title: Bladder type container for toxic materials
Inventor: BURCHETT DENNIS M
IPC: B65D25/16
Filed: 1991-03-25
Granted: 1995-07-04
Abstract: A container for controlling exposure to ma-terial stored in the container includes a substantially rigid enclosure that defines a central cavity and a set of openings including at least a first opening extend-ing between the central cavity and a region exterior of the enclosure.  The central cavity communicates with the region exterior of the enclosure only via the set of openings.  A bladder is disposed in the central cavity and has a neck releasably secured to the enclos-ure at the first opening.  The bladder receives a ma-terial to be stored and discharged only via the bladder neck.  A tether is releasably secured between the blad-der and the enclosure at the bottom of the cavity to prevent the bladder from moving toward the first open-ing and obstructing material flow through the neck. Caps seal the bladder and the enclosure opening to form a double sealed container.
Patent CA-2043098-C (CA)
Title: A forming device in packaging machines
Inventor: MAANSSON HENRIK
IPC: B65B11/00
Filed: 1991-05-23
Granted: 2000-10-10
Abstract: Forming devices in packaging machines of the type which reforms tubular packaging material of substantially circular cross-sectional configuration into individual package containers of quadrilateral cross-sectional configuration normally consist of pairwise cooperating forming flaps which are of U-shaped cross-section. In order to prevent the packaging material from being pinched between the shank surfaces of the flaps when the flaps are caused to surround the packaging material tube, the shank surfaces are designed to be undulatory, i.e. alternatingly with projections and recesses which fit in one another and guide the packaging material tube into the U-shaped recesses of the flaps without pinching the packaging material tube.
Patent CA-2044706-C (CA)
Title: Crystallization method to improve crystal structure and size
Inventor: MIDLER MICHAEL JR
IPC: B01F5/02
Filed: 1991-06-14
Granted: 2003-02-25
Abstract: Impinging fluid jet streams are used in a continuous crystallization process to achieve high intensity micromixing of fluids so as to form a homogeneous composition prior to the start of nucleation. This process permits direct crystallization of high surface area particles of high purity and stability.
Patent CA-2049219-C (CA)
Title: Printer driving apparatus for line printer
Inventor: IGUCHI KESAYOSHI
IPC: B41J2/30
Filed: 1991-08-14
Granted: 1996-03-19
Abstract: A printer driving apparatus for a line printer comprises:  a measuring circuit to measure the number of print dots; and a driving circuit which can change drive timings of dots of a print head in correspondence to a print ratio in each print cycle.  When the number of print dots is small, an interval between strobes is narrowed.  When it is large, an interval between strobes is widened.  Thus, a high-speed printing can be performed in the case of using the power source of the same capacity.  When a high-speed printing is not required, the capacity of the power source can be reduced.
Patent CA-2049280-C (CA)
Title: Disc recording and/or reproducing apparatus
Inventor: MAEDA YASUAKI
IPC: G11B20/10
Filed: 1991-08-15
Granted: 2000-10-31
Abstract: There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an interval of a predetermined number of sectors, a cluster-linking sector having a length longer than an interleaving length is provided at each linking part of each cluster, and the digital data are subsequently interleaved and recorded on a disc-shaped recording medium so that interleaving at the time of data recording on the cluster-by-cluster basis is within the range of the cluster-linking sector. There is also provided a disc reproducing apparatus for reproducing digital data by an optical unit in which playback data are obtained by reproducing record data recorded on a disc-shaped recording medium in such a manner that a cluster-linking sector longer than an interleaving length is provided in a linking section of each cluster composed of a predetermined number of sectors, the resulting data is interleaved and recorded on the disc-shaped recording medium, and the playback data are deinterleaved and freed of the cluster-linking sectors so as to be stored transiently in a storage unit.      Playback data are written in the storage unit when the data volume of playback data stored in the storage unit becomes smaller than a predetermined volume to maintain a readout space in the storage unit which is in excess of the predetermined data volume. In this manner, data may be read out continuously from the storage unit at a predetermined rate without interrupting the reproducing operation at the cluster-linking sector of the data recorded on the medium.
Patent CA-2049493-C (CA)
Title: Educational amusement device which includes a game card, and method for using the game card
Inventor: TODD ALAN B
IPC: A63F9/00
Filed: 1991-08-19
Granted: 1993-05-11
Abstract: ABSTRACT OF THE DISCLOSURE    A game card includes a playing matrix with squares arranged in rows and columns.  Starter words or starter letters may be pre-printed in the playing matrix.  The player examines advertisements to derive words which are to be inserted in the playing matrix.  Aligned with the rows of the playing matrix are spaces for the player to identify the sources of the advertisements or for the sources to be identified to the player.  A word completion matrix aligned with the rows of the playing matrix is provided to receive the terminal portions of any words that are too long for the playing matrix.  After the player has completed the playing matrix he examines it in an attempt to find the maximum number of row words in the rows of the playing matrix and the maximum number of column words in the columns of the playing matrix.  The game card additionally includes a row word scoring region and a column word scoring region to guide the player in determining a row total and a column total, which are then combined into a game score.  The game score depends both on the player's word knowledge and artful selection of words derived from the advertisements and the player's verbal agility in identifying words in the rows and columns of the playing matrix.  The game card may be combined with a periodical such as a magazine to provide an educational amusement device, but it may also be used with other forms of advertising such as television commercials.
Patent CA-2056694-C (CA)
Title: Nonseparable thrust ball bearing
Inventor: SHINOHARA TSUTOMU
IPC: F16C35/04
Filed: 1991-11-29
Granted: 1996-05-14
Abstract: A nonseparable thrust ball bearing comprising a pair of races spaced apart in the direction of axis of rotation, a plurality of balls rollable between the races, and a connecting ring rotatably interconnecting the inner peripheries of the races.  The ring comprises a hollow cylinder portion, and outer flanges formed at the respective ends of the cylinder portion generally at a right angle therewith and in engagement with the respective races.  The cylinder portion is fitted at one end thereof in the corresponding one of the races with a clearance formed therebetween, and the flange of the ring at said one end thereof is fitted in a cutout formed in the corresponding race, with a clearance provided in the cutout around the flange.
Patent CA-2059059-C (CA)
Title: Efficient vector codebook
Inventor: MAILHOT JOHN N
IPC: H04N19/94
Filed: 1992-01-09
Granted: 1997-02-04
Abstract: A vector codebook with an ordered set of vector entries that satisfy a prearranged continuity requirement is used to encode signals. The continuity requirement specifies that consecutively considered vectors may not differ from each other by more than k elements, where k is less than the number of elements in the vectors. In one embodiment, two memories are maintained. One for determining the best codebook vector selection, and one for quantizing the input signal in accordance with the selected vector. Recognizing the possibility that the best ordering possible for a given set of codebook vectors can not satisfy the continuity requirement, the vector codebook arrangement of this invention is enlarged in such a case to include additional vectors that are interposed in the sequence of vectors and arranged to maintain the continuity requirement.
Patent CA-2059849-C (CA)
Title: Polycarbonate resin composition
Inventor: KOZAKURA SHIRO
IPC: C08L69/00
Filed: 1992-01-22
Granted: 2003-06-10
Abstract: A polycarbonate resin composition comprising 1 to 99% by weight of a branched polycarbonate having a branched nucleus structure derived from a branching agent represented by the general formula:    wherein R is a hydrogen atom or an alkylgroup having 1 to 5 carbon atoms. and R1 to R6 are are hydrogen atoms, alkyl groups having 1 to 5 carbon atoms or halogen atoms, respectively, a viscosity average molecular weight of 15, 000 to 40, 000, and an acetone-soluble matter of not more than 3.5% by weight; and 99 to 1% by weight of at least one selected from the group consisting of styrene rein, polyamide resin, polyolefin and rubber-like elastomer is disclosed.      The above-mentioned polycarbonate resin composition is utilized effectively as the material for various molding products such as industrial materials for automobiles, home electric appliances, and office automation appliances.
Patent CA-2062126-C (CA)
Title: Starting and operating circuit for arc discharge lamp
Inventor: NGUYEN LONG THANH
IPC: G01R31/36
Filed: 1992-03-02
Granted: 1997-12-30
Abstract: A circuit for starting and operating a discharge lamp,  such  as  a compact  fluorescent  lamp,  at high frequency  from  an  60  Hz  AC  supply. The  circuit includes a power supply for generating a DC voltage coupled  to  a pair of AC  input  terminals.   A DC/AC converter  includes  an  oscillator  having  a  pair  of semiconductor switches coupled in parallel with the DC power  supply.   An  oscillator  starting  circuit  is coupled  to  one  of  the  semiconductor  switches  and includes  a  series  circuit  comprising  a  resistor, capacitor  and  threshold  element.   The  input  of the oscillator starting circuit is coupled to one of the AC  input  terminals  so  as  to  prevent  a  momentary flicker in the lamp after the AC supply is removed and the lamp has extinguished.  In accordance with another aspect  of  the  invention,  the  oscillator includes fusible circuit elements which render the oscillator inoperable upon failure of the lamp due to depletion of  emissive  material  on  at  least  one  of  the  lamp electrodes.
Patent CA-2074251-C (CA)
Inventor: SHERIDAN WILLIAM MARSHALL
IPC: B32B15/00
Filed: 1991-01-22
Granted: 2001-04-17
Abstract: A pad including thermal insulation and heat sink areas. The pad includes a plurality of layers of metal foil forming a stack with the layers arranged one above the other, the stack including at least one heat sink area and at least one insulating area adjacent to the heat sink area, the layers providing better heat conduction in the vertical direction at the heat sink area than at the insulating area. At least one of the layers includes a plurality of embossments therein separating the one layer from an adjacent one of the layers in the insulating area.      The pad can include a single insulating area surrounded by a heat sink area and a black coating can be provided on selected portions of the layers to improve heat radiating characteristics of the pad. For instance, the heat sink area can be coated with the black coating to radiate heat away from the pad at a desired location. The pad is particularly useful in shielding a heat sensitive component on one side of the pad from a heat source on the other side of the pad.
Patent CA-2078295-C (CA)
Inventor: PUTMAN JOHN MICHAEL
IPC: A61B1/00
Filed: 1992-09-15
Granted: 1995-11-21
Abstract: A portable console  (16) includes a universal positioning  arm  assembly  ( 18) for  holding  a  surgical instrument such as an endoscope  (14)  during a surgical procedure.  Coarse adjustment of instrument elevation above an operating table ( 12) is provided by a reversible drive motor ( 58) which extends and retracts an upright support shaft (24) along a vertical axis (A).  Coarse adjustment of instrument X-Y position within the sterile zone above an operating table is provided by articulated arm sections (20, 22, 90, 100) which are rotatably coupled to the upright support  shaft.   Fine adjustment of instrument position across the sterile zone is provided by a revers-ible drive motor  (84) which  extends  and retracts  the instrument along the longitudinal axis (C) of the support arm section (22). Fine adjustment of instrument elevation is provided by a reversible drive motor (92) which extends and retracts  the distal support arm section (100) along the axis (D).  Coarse positioning is obtained by actuation of console switches (70, 72, 74) and an arm-mounted switch (76), and fine positioning is obtained by foot pressure applied to floor switches (120, 122, 124, 126, 128) by the operating surgeon.
Patent CA-2078543-C (CA)
Title: Apparatus for automated polyelectrolyte measurement
Inventor: KRAH ROBERT
IPC: G01N15/00
Filed: 1991-03-08
Granted: 2001-07-24
Abstract: Devices for determining the flow potential especially of fluid process substances (waste water) are known which comprise a sample vessel (30) with an electrically insulating cylindrical inner section (31), a large-diameter filter section (32) above and ad-joining the latter electrodes (34, 35) substantially in the region of the ends of the cylindrical inner section, an insulating piston (33) which can reciprocate in the cylindrical inner section (31) with a defined, slight clearance and devices to measure the charge shift between the electrodes. In order to automate the determination of polyelectrolytes it is proposed to provide an outlet pipe (41, 42) opening into the base of the cylindrical section, a rinsing pipe (26) with a valve for the controlled supply of rinsing fluid into the filter section (32) and a control system (22), which is connected to devices for driving the piston (33), a valve (28) in the outlet pipe and the rinsing valve (27) and is so designed that after every polyelectrolyte determination, the substance examined is drained off via the outlet pipe through the movement of the piston.
Patent CA-2082534-C (CA)
Title: Removal of halide impurities from organic liquids
Inventor: SCATES MARK O
IPC: C07C53/08
Filed: 1992-11-10
Granted: 2003-01-07
Abstract: A method is provided for removing iodide compounds, particularly alkyl iodide compounds, from iodine-containing liquids, particularly carboxylic acids and anhydrides manufactured by the carbonylation of alcohols, ethers, esters, and the like in the presence of a rhodium catalyst and an alkali metal or alkaline earth metal salt, particularly a lithium salt, wherein the carboxylic acid or anhydride is contacted with a silver or mercury salt coordinated to a polymeric resin containing functional groups having the capability to quaternize with or form ionic salts with the alkyl halides,
Patent CA-2082638-C (CA)
Title: Low frequency vibration assembly
Inventor: WEIBEZAHN KARL S
IPC: G01M7/02
Filed: 1992-01-31
Granted: 1999-02-23
Abstract: A vibration assembly comprising a housing (12) having a central cavity (20) and a pair of side cavities (22, 24) of radially smaller dimension than that of the central cavity, all of which extends axially about an axis (26) from opposed ends of the central cavity.  A piston (50) is housed within the cavities (20, 22, 24) and includes a mass (52) disposed within the central cavity (20) and a pair of supports (54, 56) which are disposed within respective ones of the cavity pair (24, 22) and which extend axially from the mass.  The supports (54, 56) have radial dimensions which are substantially the same as those of the pair of cavities (22, 24).  The mass (52) and the supports have axial dimensions which are substantially less than those respectively of the central cavity means and of the pair of cavities (20, 22, 24) for enabling the piston (50) to move axially within the cavities.  Air inlets (61, 62) in the housing and conduits (66, 68) in the piston enable the piston to reciprocate within the housing for repeated impact against an impactor (38) for transmission of energy thus obtained to a test table and an item under test.
Patent CA-2083204-C (CA)
Title: Adhesion prophylaxis
Inventor: SEMM KURT
IPC: A61B90/00
Filed: 1992-11-18
Granted: 1998-09-01
Abstract: The invention relates to a mechanical adhesion prophylaxis for endoscopy, in which a double-walled sheet is rolled onto  a  sheet applicator  and  introduced  into  the  body cavity.  In the body cavity the double-walled sheet is inflated in the manner of an air cushion and consequently prevents postoperative adhesion of deperitonized areas. The air cushion-like adhesion prophylaxis can be fixed in the body cavity by fixing areas.
Patent CA-2083636-C (CA)
Title: Bicycle frame
Inventor: TAKAGAKI MAKOTO
IPC: B62K25/28
Filed: 1992-11-24
Granted: 1996-02-20
Abstract: A bicycle frame has a triangular frame structure formed by bracket, seat and head lugs linked together by a seat tube, an upper tube and a lower tube.          A chain stay is pivotally connected at a front end to the bracket lug and has a rear end fixed to a rear axle support to which a lower end of a rear fork member is pivotally connected.  A triangular link is pivotally connected at a first point adjacent a first apex thereof to the seat lug and also pivotally connected at a second point adjacent a second apex to the upper end of the rear fork member.  The triangular link is further pivotally connected at a third point ajacent a third apex to a free end of a cylinder rod of a shock absorbing assembly having a cylinder pivotally connected to the upper tube of the triangular frame structure, whereby the shock absorbing cylinder assembly is operative not only to absorb a shock on the rearwheel but also to provide a "progressive effect" to enhance running performance and suspension and assure a frame rigidity.